Korean J. Pl. Taxon. 2011; 41(2): 108-112.
Published online 2011 June 30.
A Palynological Study of the Korean Oldenlandia L. (Rubiaceae)
한국산 백운풀속(꼭두서니과)의 화분학적 연구
남보미 , 정규영
ABSTRACT
The pollen of 5 taxa on Korean Oldenlandia L. was investigated by LM and SEM. The pollen grains were monads, 20.7-36.0 μm in polar length, with an equatorial diameter of 21.0-38.4 μm. The pollen shapes were oblate-spheroidal or spherical (P/E ratio 0.93-1.00). The apertures numbered 3-7 in number, colporate in shape, with a colpus length of 4.2-20.4 μm and a colpus width of 2.6-3.4 μm. The sexine was 0.9-2.4 μm in terms of its thickness, the surface pattern was reticulate, scabrate or neither. Based on these results, the size of the pollen grain, the number of apertures, and the surface pattern of the sexine were all useful for an interspecific classification. The genus Neanotis, established via the pollen characteristics, was thought to be reviewed in its entity regarding the continuous variation of generic characteristics.
Keywords :
Oldenlandia, Pollen size, Aperture, Scabrate
